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-rw-r--r--security/smack/smack.h57
1 files changed, 21 insertions, 36 deletions
diff --git a/security/smack/smack.h b/security/smack/smack.h
index b61e75f224d..cc361b8f3d1 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -23,13 +23,19 @@
#include <linux/lsm_audit.h>
/*
+ * Smack labels were limited to 23 characters for a long time.
+ */
+#define SMK_LABELLEN 24
+#define SMK_LONGLABEL 256
+
+/*
+ * Maximum number of bytes for the levels in a CIPSO IP option.
* Why 23? CIPSO is constrained to 30, so a 32 byte buffer is
* bigger than can be used, and 24 is the next lower multiple
* of 8, and there are too many issues if there isn't space set
* aside for the terminating null byte.
*/
-#define SMK_MAXLEN 23
-#define SMK_LABELLEN (SMK_MAXLEN+1)
+#define SMK_CIPSOLEN 24
struct superblock_smack {
char *smk_root;
@@ -66,6 +72,7 @@ struct task_smack {
#define SMK_INODE_INSTANT 0x01 /* inode is instantiated */
#define SMK_INODE_TRANSMUTE 0x02 /* directory is transmuting */
+#define SMK_INODE_CHANGED 0x04 /* smack was transmuted */
/*
* A label access rule.
@@ -78,15 +85,6 @@ struct smack_rule {
};
/*
- * An entry in the table mapping smack values to
- * CIPSO level/category-set values.
- */
-struct smack_cipso {
- int smk_level;
- char smk_catset[SMK_LABELLEN];
-};
-
-/*
* An entry in the table identifying hosts.
*/
struct smk_netlbladdr {
@@ -113,22 +111,19 @@ struct smk_netlbladdr {
* interfaces don't. The secid should go away when all of
* these components have been repaired.
*
- * If there is a cipso value associated with the label it
- * gets stored here, too. This will most likely be rare as
- * the cipso direct mapping in used internally.
+ * The cipso value associated with the label gets stored here, too.
*
* Keep the access rules for this subject label here so that
* the entire set of rules does not need to be examined every
* time.
*/
struct smack_known {
- struct list_head list;
- char smk_known[SMK_LABELLEN];
- u32 smk_secid;
- struct smack_cipso *smk_cipso;
- spinlock_t smk_cipsolock; /* for changing cipso map */
- struct list_head smk_rules; /* access rules */
- struct mutex smk_rules_lock; /* lock for the rules */
+ struct list_head list;
+ char *smk_known;
+ u32 smk_secid;
+ struct netlbl_lsm_secattr smk_netlabel; /* on wire labels */
+ struct list_head smk_rules; /* access rules */
+ struct mutex smk_rules_lock; /* lock for rules */
};
/*
@@ -165,6 +160,7 @@ struct smack_known {
#define SMACK_CIPSO_DOI_DEFAULT 3 /* Historical */
#define SMACK_CIPSO_DOI_INVALID -1 /* Not a DOI */
#define SMACK_CIPSO_DIRECT_DEFAULT 250 /* Arbitrary */
+#define SMACK_CIPSO_MAPPED_DEFAULT 251 /* Also arbitrary */
#define SMACK_CIPSO_MAXCATVAL 63 /* Bigger gets harder */
#define SMACK_CIPSO_MAXLEVEL 255 /* CIPSO 2.2 standard */
#define SMACK_CIPSO_MAXCATNUM 239 /* CIPSO 2.2 standard */
@@ -215,10 +211,9 @@ struct inode_smack *new_inode_smack(char *);
int smk_access_entry(char *, char *, struct list_head *);
int smk_access(char *, char *, int, struct smk_audit_info *);
int smk_curacc(char *, u32, struct smk_audit_info *);
-int smack_to_cipso(const char *, struct smack_cipso *);
-char *smack_from_cipso(u32, char *);
char *smack_from_secid(const u32);
-void smk_parse_smack(const char *string, int len, char *smack);
+char *smk_parse_smack(const char *string, int len);
+int smk_netlbl_mls(int, char *, struct netlbl_lsm_secattr *, int);
char *smk_import(const char *, int);
struct smack_known *smk_import_entry(const char *, int);
struct smack_known *smk_find_entry(const char *);
@@ -228,6 +223,7 @@ u32 smack_to_secid(const char *);
* Shared data.
*/
extern int smack_cipso_direct;
+extern int smack_cipso_mapped;
extern char *smack_net_ambient;
extern char *smack_onlycap;
extern const char *smack_cipso_option;
@@ -239,24 +235,13 @@ extern struct smack_known smack_known_invalid;
extern struct smack_known smack_known_star;
extern struct smack_known smack_known_web;
+extern struct mutex smack_known_lock;
extern struct list_head smack_known_list;
extern struct list_head smk_netlbladdr_list;
extern struct security_operations smack_ops;
/*
- * Stricly for CIPSO level manipulation.
- * Set the category bit number in a smack label sized buffer.
- */
-static inline void smack_catset_bit(int cat, char *catsetp)
-{
- if (cat > SMK_LABELLEN * 8)
- return;
-
- catsetp[(cat - 1) / 8] |= 0x80 >> ((cat - 1) % 8);
-}
-
-/*
* Is the directory transmuting?
*/
static inline int smk_inode_transmutable(const struct inode *isp)